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Cortez flounder (Paralichthys aestuarius) — Paralichthyidae

Cortez flounder

Paralichthys aestuarius
DD · Data Deficient

The Cortez flounder (Paralichthys aestuarius) is a brackish-water fish of the family Paralichthyidae that grows up to 58 cm.

Length
58.3 cm
Water
Brackish
Depth
0–44.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Flat / disc-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Eastern Pacific
Edibility
Commonly eaten

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Description

The Cortez flounder is a large flatfish from the eastern Pacific, off Baja California and the Gulf of California. The species grows to about 58 cm and has the typical strongly flattened, asymmetric body of a flounder, with both eyes on the left side and a large mouth. As a bottom-dweller the fish lives on soft bottoms of estuaries and shallow coastal waters to about 44 metres depth and is an active predator. It is a food fish of minor commercial importance. Owing to insufficient data the IUCN lists the species as Data Deficient (DD).

Frequently asked questions

How do you recognise the Cortez flounder?

The Cortez flounder has a flattened, disc-shaped body, is mainly brown and shows a marbled pattern. Asymmetrical flatfish with both eyes on the left; active bottom predator

Where does the Cortez flounder live?

The Cortez flounder lives in brackish water and is mostly found around sand or mud bottom. Eastern Pacific

How big does the Cortez flounder get?

The Cortez flounder grows to a maximum of about 58 cm. On average the species is around 45 cm.

Is the Cortez flounder dangerous to humans?

No, the Cortez flounder is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Cortez flounder edible?

Yes, the Cortez flounder is commonly eaten.

More photos

Cortez flounder (Paralichthys aestuarius) — Paralichthyidae — 2
iNaturalist ((c) Alberto, some rights reserved (CC BY-NC))
Cortez flounder (Paralichthys aestuarius) — Paralichthyidae — 3
iNaturalist ((c) bgmooaz, some rights reserved (CC BY-NC))
Cortez flounder (Paralichthys aestuarius) — Paralichthyidae — 4
iNaturalist ((c) Álvaro San José Elizundia, some rights reserved (CC BY-NC))
Cortez flounder (Paralichthys aestuarius) — Paralichthyidae — 5
iNaturalist ((c) Álvaro San José Elizundia, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Cortez flounder verified
Scientific name
Paralichthys aestuarius
Family
Paralichthyidae

Appearance

Size class
Large verified
Max length (cm)
58.3 verified
Average length (cm)
45.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown inferred
Pattern
Marbled inferred
Tail shape
Straight inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
No sourced

Habitat & distribution

Water type
Brackish sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
0 sourced
Max depth (m)
44.0 verified
Natural range
Eastern Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Fishes and crustaceans inferred
Social behaviour
Solitary inferred
Territorial
No sourced
Activity
Nocturnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Bottom-dweller of estuaries and coastal water; present year-round. sourced
Special features
Asymmetrical flatfish with both eyes on the left; active bottom predator sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with baitfish or lures on soft bottoms. sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Paralichthys

More from the family Paralichthyidae

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